The 9.0 magnitude earthquake and tsunami struck many areas of Japan and destroyed everything in its path. The effects could be felt worldwide. Tsunamis have hit the Pacific coasts of many countries. Many people are dead, missing or homeless. People were living in shelters, without drinking water, electricity, telecommunications, etc. Japan is still recovering from the damage thanks to foreign aid. Radioactive substances from the meltdown and resulting debris are affecting the global environment. Learning about the mega-thrust earthquake will help us improve the warning system that could save people and prevent serious